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Top Forums Programming -Warray-bounds option to GCC compiler Post 303013093 by milhan on Wednesday 14th of February 2018 06:48:22 PM
Old 02-14-2018
bakunin,
Thanks for the explanation. I know what array bounds checking means. That's why I posted this question. Have you tried turning on the -Warray-bounds on GCC and accessing an illegal array position to see if it works as you described? I was expecting the compiler will give me warning for accessing an array element beyond its declared size, but it didn't give me any warnings at all. The below program runs just fine on my Linux box. I gave the gcc version on my post above. If I assign 10000 to index, program give segmentation fault, but still compiles with no warnings. -Warray-bounds switch is on.
Code:
int main()
{
	const int index=1000;
	int numbers[8] = {1,2,3,4,5,6,7,8};

	numbers[index] = 999;
	cout << numbers[index] << endl;

	return 0;
}

 

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INTERCAL::ByteCode(3pm) 				User Contributed Perl Documentation				   INTERCAL::ByteCode(3pm)

TITLE
Language::INTERCAL::Bytecode - intermediate language DESCRIPTION
The CLC-INTERCAL compiler works by producing bytecode from the program source; this bytecode can be interpreted to execute the program immediately; alternatively, a backend can produce something else from the bytecode, for example C or Perl source code which can then be compiled to your computer's native object format. The compiler itself is just some more bytecode. Thus, to produce the compiler you need a compiler compiler, and to produce that you need a compiler compiler compiler; to produce the latter you would need a compiler compiler compiler compiler, and so on to infinity. To simplify the programmer's life (eh?), the compiler compiler is able to compile itself, and is therefore identical to the compiler compiler compiler (etcetera). The programmer can start the process because a pre-compiled compiler compiler, in the form of bytecode, is provided with the CLC-INTERCAL distribution; this compiler compiler then is able to compile all other compilers, as well as to rebuild itself if need be. See the online manual or the HTML documentation included with the distribution for more information about this. SEE ALSO
A qualified psychiatrist AUTHOR
Claudio Calvelli - intercal (whirlpool) sdf.lonestar.org (Please include the word INTERLEAVING in the subject when emailing that address, or the email may be ignored) perl v5.8.8 2008-03-29 INTERCAL::ByteCode(3pm)
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